-45.93% is the change from 921 to 498
Calculation steps:
[( 498 - 921 ) ÷ 921] x 100 = -45.93%
Formula
Percentage change = [(498 - 921) / 921] x 100
Subtract the new number by the original number
498 - 921 = -423
-423 ÷ 921 = -0.4592833876221498
-0.4592833876221498 x 100 = -45.93%